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> Has anyone tried or have experience with the dimple tape that when put on a > prop it decreased turblence and increased aircraft speed by 4-6 mph? Yeah: I don't know how to explain it so that I make cents/sense but here goes: We ran it on a Tomahawk. Here are the basic results. Static RPM when up by 100, (2200 - 2300). However there was no increase in speed, (7500 msl, 75% prower). Numerous test for over two months indicated that we did not make a significant increase. Any increase that was noted, and a increase was rarely noted, could have been from any factor. It could not be tied back to the tape. Why didn't it work? We had it on a Tomahawk, which is equipped with a thin, low pitch prop. A thick, wood, high pitch prop is running very close to stall. (Remember the prop is just a spinning wing). So, on the high pitch prop, the tape "May" cause enough turbulence, vortex, to prevent the air from separating and give more lift (pull). The tape is surpose to work like Vortex Generators for the prop, so the prop may be as improtant as the tape. Thats about as far as we've went. We've just got a Glassair with the wood high pitch prop and may try it again. Jack __________________________________________________ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] ____________________________________________________________ T O P I C A -- Learn More. Surf Less. Newsletters, Tips and Discussions on Topics You Choose. http://www.topica.com/partner/tag01
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